CVE-2026-96806: Apache Airflow Keycloak provider: Keycloak auth manager: logout does not invalidate the session — JWTMiddleware mints an unrevoked replacement token

[Jarek Potiuk <potiuk () apache org>]

Severity: moderate 

Affected versions:

- Apache Airflow Keycloak provider before 0.11.1

Description:

The Apache Airflow Keycloak auth manager did not end the session on logout: the logout route revoked the presented 
token, but `KeycloakJWTMiddleware` then issued a new, unrevoked token on the same response, so the user stayed logged 
in. Deployments using the Keycloak auth manager are affected: after a user logs out, anyone with later access to the 
same browser (for example on a shared workstation) can continue to act as that user.

Users of apache-airflow-providers-keycloak are recommended to upgrade to apache-airflow-providers-keycloak 0.11.1 or 
later.

Credit:

JelyFishhhhhh (finder)
Jarek Potiuk (remediation developer)

References:

https://github.com/apache/airflow/pull/73695
https://airflow.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-96806